Machine for cementing shoe soles



May 25, 1948. w. GRIFFITH 2,442,167

MACHINE FOR CEMENTING SHOE SOLES Filed March 18, 1946 @j @framkijaiented May 25, 1948 UNITED STATES PATENT OFFICE 2,442,167 MACHINEFOR CEMENTING SHOE SOLES William Griffith, South Pasadena, Calif.

Application March 18, 1946, Serial No. 655,091

Claims. 1

This invention relates to improvements in shoe machinery and concernsprimarily a device for facilitating the cementing of shoe soles ontouppers.

It is now common practice to attach shoe soles to uppers by applyingcement to an upper on a last and to the sole and to cause the sole toadhere to the upper by subjecting the applied sole on the last to greatpressure,

p One object of the present invention is t0 pr-ovide an improved machineconsisting of a walking beam that is pivotally mounted intermediate itsends and which has two boxes located beneath the walking beam onopposite sides of its pivotal mounting adapted to contain a liquid andpresenting a flexible upper surface on which the last with its upper andapplied sole may be positioned and which has last pressing means forpressing the last firmly against the upper surfaces of the boxes whichlast pressing means are guided and restricted to vertical movements andto provide means for pneumatically oscillating or rocking of the walkingbeam.

Still another object of the invention is to provide a machine forcementing shoe soles onto shoes wherein there is a walking beam equippedon opposite ends thereof with last pressing means for pressing the lastdownwardly against the pressure surface and which is so arranged thatwhile one last is being pressed by the machine the other last pressingmeans is in released position to enable lasts to be removed and appliedwhile the first last is being pressed.

With the foregoing and other objects in View, which will be mademanifest in the following detailed description and specically pointedout in the appended claims, reference is had to the accompanyingdrawings for an illustrative embodiment of the invention, wherein:

Figure 1 is a longitudinal vertical section through a portion of themachine embodying the present invention;

Fig. 2 is a top plan View of a machine;

Fig. 3 is an end View in elevation, parts being broken away and shown insection and may be regarded as taken in the direction of the arrow 5upon Fig. l.

Referring to the accompanying drawings wherein similar referencecharacters designate similar parts throughout, the improved machinecomprises a suitable table generally indicated at Hi and having astandard II thereon which serves to pivotally mount a walking beam' I2.To one end of the walking beam links I4 are pivotally secured and theselinks serve to connect the walking beam to the piston rod I5 of apneumatic cylinder I6 within which a piston not shown is reciprocable.Air or other iluid pressure is supplied to the ends of the cylinderthrough 'a c-onduit ISa from any suitable control valve such as a footoperated valve to forcibly elevate or lower the piston and toconsequently rock the walking beam IZ. In the table on opposite sides ofthe standard I I and below the walking beam I2 there are boxes II and I8which are adapted to contain a liquid such as water indicated at I 9.The boxes have outwardly extending anges adjacent the top thereof whichrest on the table I0 and on these flanges there is positioned a rubberdia.

phragm 20 preferably covered with 1a tough but flexible matter such aselks hide indicated at 2I. The rubber diaphragm and its covering 2| areretainedV on the boxes by means -of a clamping ring 22 and-cap screws23. Within the boxes there are wooden heel supports 24 which rest on thebottom surfaces of the boxes and have their tops only slightly spacedbelow the bottom of the rubber diaphragm 20. These supports carry woodendowels 25 that extend substantially entirely across the box to maintainthe supports 24 in position therein. The supports 24 are 'adapted to bepositioned beneath the heel of the last. At the outer sides of theboxesv there may be stops 26 preferably resiliently faced as at 21 suchas by leather or the equivalent and the heel of the shoe is adapted tobe positioned against such stops.

At approximately equal distances from the pivot I3 links 28 and 29 arepivotally mounted on the walking beam as at 30 and 3| respectively.These links serve to suspend small beams 32 and 33 which have at theirouter ends seats 34 and 35 adapted to engage over the heel portion ofthe last L. The movements of these beams are restricted or guided tovertical movements by means of arms 36 which extend rearwardly andslidably engage Vertical guide rods 31 and 38 respectively that aremounted on the back of the table.- Collars 39 and 40 are slidable alongthe links of these beams so as to be adjustable to the lengths of theylast. These collars carry toe engaging portions 4I that are preferablyresiliently faced such as by leather indicated at 42. These portions areadapted to engage over the toe of the last and cooperate with theportions 34 and 35 in pressing the lastfand is applied Inaterialdownwardly against thetops of the boxes with great effort. Springs 43and 44 may .connect the beams 32 and 33 to the links 28 and 29 urgingthe beams into positions wherein the heel seats 34 and 35 are engageablewith the lasts L in advance of the toe portionsv 4 I. Thus althoughv thebeams 32 and 33 are pivotally connected to the lower ends of the linksto accommodate themselves to the last the movements of the `beams, 32and 33 are restricted to vertical movements by the sliding engagementbetween the arms 36 and the vertical guide rods 31 and 38.

In theV use of the machine a last having an upper thereonl and having acemented sole applied thereto is positioned on the upper surface of oneof the boxes such as that illustrated in Fig. 1. compressed air or theequivalent to thev pneumatic cylinder IE the Ipistonrod I5 willv beforced.l

upwardly to rock the walking beam I2. about I3.` as a center in acounter-clockwise directiogli.` Asr the last pressing means provided" bythe beam 32` descends, its heel seat 34 engages the topof the last overthe heel and presses the heel down# wardly. Astheheel usually is of lessarea than 'theY sole the heel wouldnormaily tend to pene that thepressure aiforded by the liquid within` the box is. evenly distributedeven though the` heel may be considerably narrower than the toe.- Whilethe Walking beam isin this positiona last over` the box I8Vmay beremoved anda new last Withits applied upper andsole may be installedthereon. The flow of.V uid to the pneumaticcylinder I6 isY then reversedtorook thefwalking beamin a clockwisedirection about I3. as acenter tocausethe last thatis applied tothe box. I 8` to be pressed downwardlythereagainst in a similar manner and to cause the last pressing -meansprovided by the beam ,32. to.lii.t.r and release thev last L o n Athebox Il... VWhen, this lastisreleased it 11121.37A be removed and anew.lastv substituted therefor while thepressure-isbeing continuouslyapplied .to the part. positionedzon-the box I8. In this manner, whileone shoe is having pressureI applied thereto to cementthesole thereonanother last. may be removed; and replaced during this small period oftime. Y Y

It willbe appreciatedfrom theabove-described construction that theimproved machine is;very simple and highly durable and that While-oneshoe is having itsY s ole cemented in place by the application of great;pressure that, another shoe; may bei removedV fromvthe machine and a newshoe applied thereto inits place. The stops at 26 and 2l preventrearward sliding or slipping and as the heel has its downwardmovementultimately limited by the blockg24 the action is to On supplying the uidpressure such as 4 occasioned by the necessity of replacing the boxes isgreatly reduced if not entirely eliminated.`

Various changes may be made in the details of construction withoutdeparting 4from the spirit and SCODe of the invention as defined bytheap# pended claims. 1

I claim:

1. A machine for cementing shoe soles to upi Y pers comprising a Walkingbeam, means for pivotally mounting thewalking beam intermediategthe endsthereof, aflexible support beneath .the walking beam on each side of thepivotal Vmounting, last pressing .means on the walking beam over thesupports for pressing a last'thereagainst, means for restricting thelast pressing means to. vertical movements, and. meansV for rocking thewalking beam.V Y

2. A machine for cementing shoe soles to uppers comprising a walkingbeam, means lfor pivotally mounting the walking beam interme-V diate theends thereof, a flexible support beneath the walking. beam on each'side.of the pivotal mounting, last pressing `means on the walking. beam overthe supports for pressing a last there-V 1 against, means forvrestricting the last pressing means to vertical` movements,. andpneumatic means for rocking the walking beam, k

3. A machine for cementing shoe soles to up. pers comprising a walkingbeam, means Vfor pivotally mounting the walking beamintermef diate theends thereof, means for rocking the Walking beam, links pivotallyconnected to the one., beam onA opposite sides of. its pivot, lastpresse' ing. means. pivotally 'mounted uponv Vthe links,

means on thelinks for guiding the last` pressing means. and`restricting, its movements to. vertical movements, andboxesarrangedbeneath the last..

diate the ends thereof, means for. rocking the'` walking beam, lastpressing' means suspended from. the Walking beam equal distances fromand v Qn.,opposit.e sides of. the pivot, and' a support press the shoedownwardly against the boxes 'with f a small rolling action from heel totoe which isrhig'hly advantageous. The boxes merely rest by meansjoftheir flanges on top of the table and in the event that itis necessaryto remove and replace either `or both of the boxes this may berreadilyaccomplished as the boxes need only be lifted out of the apertures inthe table that theyoccupv. Consequently Shutdown .timeA the lastpressing means may` press a shoe upper andl shoe sole,.and means.restricting the last pressingv means tomovements perpendicular. to n theplanes of the supports.

WILLIAM GRIETITH.

ngEEnENoEs CITED The following referenceszareof. record in the v fileVof this patent: Y UNITED STATES.` PATENdT NumberY Name Date 1,495,163lCasgra'in May 27, 192,4 1,939,510 YMichalk July 27, 1932 2,168,606`Movsesian j Feb. 23, 1938 2,219,419. .Jacobus Nov. 1,5, 1939 2,311,325,Anderson July 24, 19.41,

